code: def setUp(self):
      super(SaverTest, self).setUp()
      cpus = config.list_physical_devices("CPU")
      # Set 3 virtual CPUs
      config.set_logical_device_configuration(
          cpus[0],
          [
              context.LogicalDeviceConfiguration(),
              context.LogicalDeviceConfiguration(),
              context.LogicalDeviceConfiguration(),
          ],
      )
      self.local_options = checkpoint_options.CheckpointOptions(
          experimental_io_device=LOCALHOST
      )
  
imports: import os
  import time
  from tensorflow.python.checkpoint import checkpoint
  from tensorflow.python.checkpoint import checkpoint_options
  from tensorflow.python.checkpoint import functional_saver
  from tensorflow.python.checkpoint import graph_view
  from tensorflow.python.eager import context
  from tensorflow.python.eager import remote
  from tensorflow.python.eager import test
  from tensorflow.python.eager import wrap_function
  from tensorflow.python.framework import config
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.module import module
  from tensorflow.python.ops import gen_io_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.platform import gfile
  from tensorflow.python.training import server_lib
  from tensorflow.python.training.saving import saveable_object_util
label_desc: Use image node_id 1 for calling the SaverTest obj's underlying member method code with example usage: obj.setUp() without return types